Suicidal behaviours in adjustment disorder and depressive episode

Background: Little is known about suicidal ideation and behaviours in adjustment disorder (AD). In this paper we sought to examine the variables independently associated with suicidal ideation and behaviour in patients diagnosed with AD or depressive (DE) episode among psychiatric outpatients and in liaison psychiatry. Methods: 370 patients who were referred to the liaison psychiatry services (including those seen in the Emergency Department) at 3 Dublin hospitals, and were clinically diagnosed with either DE or AD, based on the ICD 10 diagnostic criteria, were recruited to the study. We examined their demographic and clinical characteristics, and the associations between these and suicidal ideation and behaviour on multivariate analysis. Results: Younger age, single marital status, and greater severity of depressive symptoms were significantly associated with suicidality across both diagnoses. On multivariate analysis, greater severity of depressive symptoms was associated with suicidality in those with AD (p=0.012) and DE (p=0.009). Those with AD exhibited suicidality at lower symptom scores than did those with DE but in both groups it still occurred at the highest level of severity. There were differences in the objective circumstances measure of suicide intent. Limitations: We used clinical diagnosis rather as the main diagnostic classification. The generalisability of this paper may be limited to consultation-liaison psychiatry settings, where suicidal ideation and behaviours are common. Conclusions: Suicidality in AD and DE has broadly similar risk factors but differ in aspects of suicide intent. Different mechanisms may underpin suicidality in those with AD compared to DE.